Carriage-stop for type-writing machines.



No; 860,299. PATENTED JULY 16, 1907. W. W. HOPKINS.

CARRIAGE STOP FOR TYPE WRITING MACHINES.

APPLICATION FILED D30. 4. 190a 3 SHEETSSHEET lv PATENTED JULY 16, 1907.

' W. W. HOPKINS. CARRIAGE STOP FOR TYPE WRITING MACHINES.

APPLICATION FILED DBO. 4, 1906.

3 SHEETS-SHEET 2.

- Ira 1:21.20 W William Wffap/am% PATENTED JULY 16, 1907.

W. W. HOPKINS.

CARRIAGE STOP FOR TYPE WRITING MACHINES.

APPLICATION FILED DEO.4, 1906. I

3 SHEETS-SHEET 3.

' [Tu/claim; 7 jdz'azn llifapiaiw.

WILLIAM W. HOPKINS, OF ST. LOUlS, MlSSOUlll, ASSIGNOR, BY MESNE ASSlG PATENT oirrros.

)1 M ENTS, TO

THE MOON-HOPKINS BILLING lliAClllNE COMPANY, OF ST. LOUIS, MISSOURI, A CORPO- RATION OF MISSOURI.

CABRIAGLT-STOP FOR TYPE-WRITING MACHINES.

I Io. 860,299.

Specification of Letters Patent.

Patented July 16, 1907.

Application filed December 4,1906. Serial No. 346,273-

To all whom it may concern Be it known that I, WILLL-iM W. IIOPKIXS, a citizen of the United States. residing at St, Louis, Missouri, have invented a certain new and useful Improvement in CarriageStops for 'lypdllriting Machines, of which the following lull. clear. and. exact desc iption, such as will enable others skilled in the art to which it appcrtains in make and use. the no, reference lining had to the -.icconipanying "ings, forming part of this specification, in which Figure l is a side elevation of Lt typmvriiing machine embodying the features of my invention; Fig. 2 is a vertical cross sectional view of said machine; Fig. 3 is a detail view of parts oi the taliulating' mechanism;

Fig. 3 is a plan view of the tzil'iuhiting he s; Fig. 4 is a sectional view on the line 4-4 of Fig. and Fig. 5

OZ a rear elevation of the machine shown in Fig. l.

This invent on relates to iypewriting machines and has for its object to provide a novel means for arresting the paper carriage at several diiiercnt points in its lateral or transverse movement is necessary when tabulating work is being performed. I have not herein described the complete machine oi which the stop mechanism herein claimed forms part as said machine 2 is shown and described in my pending application Serial No. 330,726, filed August 15, 1906.

Referring to the drawings which represent the preferred form of my invention, A designates the type segment which is mounted or. a frame that is actuated by suitable mechanism to move the type segment into operative position with the printing hammer 29 which forces the paper a and inking ribbon 10 into engagement with the characters on the type segment, the paper a being mounted in a carriage that moves trans versely oi the machine. This printing hammer is normally held retracted by a spring 30, but is moved forward to make a printing impression by means of an arm 31 forming one member of a bell crank lover of which the arm 32 is the other member. Arm 32 car' rios a bar 33 which extends over the r; t1 ends of the key lovers 3. Whenever any of the keys are depressed the rear ends of the key levers, when approaching the upper limit of their movement, will strike the bar 33, rock the bell crank lever above described and force the type hammer against the type which has been positioned at. the printing point. Spring 30 will inimcdiately recover the type hammer and restore the bell crank lever to normal position.

The paper carriage before referred-to consists of a frame 34 mounted to move along a track 35. On this frame is arranged an apron 36 for receiving and supporting the lower end of a. sheet of paper a. An overhanging guard 37 is provided for supporting the upper end of the sheet of paper.

58 is a rubber-laced feed roller on one end of which is arranged a ratchet 39.

10 is a paper iced pawl cooperating with ratchet; 39 and mounted on the 0nd of lcver 4], upon whose opposite end is a link 42, which link. as shown in Fig. 2, is pivotally connected to an arm 43 whose 0nd extends inlo the path of movement of it pin 44 on the drum 45 containing the motor spring [or the carriage. A cable '46 extends from this spring drum 45 over sheaves and is connected to the carriage at the point 47. Another cable -16 is connected to a supplemental spring drum 48 and to the carriage at the point 47*. Whenever spring drum 45, rotating in the-direction of the arrow in Fig. 5, engages the arm 43 by means of pin 44, the paper feed pawl will be operated so as to linespacc the paper. Pin 44 is so positioned on drum 45 that it 'strikes the arm 43 as the paper carriage is moved to the rightto start a new line.

The bell crank lever 31-32 carries an escnpenient mechanism comprising a fixed tooth 49 and a yielding tooth 50, said teeth cooperating with an escapement 7 5 wheel 51, which escapemont whcelis mounted on shaft 52 journaled in the pivotal frame 53, and carries at its upper end a pinion 54 which normally meshes with a rack 55 carried by the paper carriage. Whenever akey is depressed the bell crank lever 31-32 is vibrated and tho escapcnlent. wheel 51 permitted to rotate a. distance of one tooth, which permits movement of the paper carriage a distance of one letter space: 7

56 indicates a space key, the rear ends 0i whose levers extend under the bar 33. v

58 indicates tabulsting keys, the rear ends of whose bars 59 are beveled, as shown in Fig. 2. Whenever a mbulating key68 is depressed the beveled end thereof engages a collar 60 on the shaft 52 and rocks frame 53 rearwardly so as to disengage the pinion 64 from the rack 55. When the paper carriage is thus disconnected under the restraining influence of the escapement mechanism, the motor spring in the spring barrel 45 moves the carriage toward the left. The spring in barrel 45 is stronger than the spring in barrel 43, and consequently whenever the carriage is tmvoling toward the lefta like spring in barrel 48 i.-- being wound up in readiness, whenever the carriage moves toward the right, to take up slack in the cable 46 and return to zero position, a stop disk 6] iixcdon the forward end of shaft which supports the spring drum 48. Referring to Figs. 1 and 3, it will be observed that the stop disk 6]. is composed of two plates having pen forations adjacent to their periphery in which may be placed removable pins 62.. These perforations are given numbers constituting a line scale. A pointer 63 cooperates with this scale or dial, as it might be called, and the operator by looking at the position of the dial with relation to said pointer may adjust the carriage or determine the exact position oi' the printing point in a line. This dial, when a pin or pins is inserted in the openings thereoi, constitutes a stop disk by cooperating with the bent ends 64 of levers 65 connected by links 66 with tabulating keys respectively. When a tabulating key is depressed and the pinion 54 disengaged from the rack on the carriage, one or the stops 64 will be positioned in the path of movement of a pin 62, and the carriage will be arrested in the position thus determined by the pin. When the carriage is so arrested the tubulating key is released so as to restore engagement between the pinion 54 and rack 55. At the same time the projection 64 is raised out of engagement with the stop disk. l

Four tabulating keys are provided for the purpose of arresting the carriage in four different positions without changing theposition of the pin (52. The reason for doing this is to enable the operator to correctly position the numbers one under the other in proper column order in tabular work. For instance, in making out bills if the extension contains three figures the tabulating key marked "3 is depressed. If the extension contains only one figure the iabulat' ing key marked 1 is deprcsscd, and the carriage will be arrested so that when a printing impression is made ai 'r the operation of the i tabuiating key the number printed will be in the column of lowest order. For a number containing four figures a tabu lating key marked 4 is operated to correctly' position the carriage so as to print lens oi dollars, units ol' dollars, dimes and cents in their proper columns. if a decimal point is uscd; or thousands, hundreds, tons and units in their proper columns if no decimal point is employed. The stop disk (ii is provided with a handle 67 by which said stop disk and its connected parts may be rotated. liy this method the spring drum 48 may be rotated and with it the spring drum 45. it is obvious that the only'dircclion in which the stop disk can be rotated by the handle when the parts are in normal position is that pormilicd by the yielding escapement tooth 50, which direction is cquai to the movement of the carriage to the right. Thus if it was desired to print a column oi numbers. the opcrator would strike an appropriutev-taluilaiing key so as to jump the carriage to propcr position at which the number could be printed. Thcuthc parts could be so adjusted that partial rotation ol' the slop disk would cause the liu -spaciii: incchanism to operate and ilic carriage to be re-set to he jumped by the deprcssiou oi another tabulating key.

if the stop pin 62 were so positioned as to cause the carriage to be arrested in four different positions in its travel upon the depression of any one oithe tabulating keys. it will be observed that the escapement mechanism will be disconnected from the driving mechanism a number of times, but this will not disturb the relation between the carriage and the spring drums 45 and 48 and their connected parts. The cables 46 and 46 connected to the two drums are also attached to the carriage, and in this manner, regprdless of the position oi the carriage, the drums 45 and 48 will bear lixed relation thereto. Any ordinary means such as ratchet and pawl mechanism 68 may be employed for holding the spring in drum 45 under varying tensions. I

I am aware that minor changes in the construction,

my device can be made and substitutedfor those herein shown and described without in the least de parting from the nature and principle of my invention.

' Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. in a typewriting machine, the combination with a latcrially movable carriage, an cscapement mechanism ihercfor comprising a plvotally mounted escanemcnt shaft, a l'nbuluting key adapted to engage and move said escape ment shaft to disconnect the escapement mechanism from the carriage, a rotatable stop disk connected to and niovable with the carriage, and means that is moved into op erutive posiiion by the depression of said tubulnting kej' for arresting the motion of said disk; substantially as described.

1.. in a typewriting machine, the combination with a traveling carriage. a motor spring for causing the travel oi said carriage in one direction, on escapement mechanism for controlling the travel oi said carriage and comprising u plvotaiiy mounted escapement shaft, a vertically (lispfiriHi perforated disk located at the front or the ma- ('liinc and connected to said carriage, a dial on said disk, a stationary pointer; cooperating therewith, movable stop pins dcsignod to be arranged in the perforations of said disk, :1 iubuluting key having: a rearward extension ,which engages and nnlvcs said escapcment shaft to release the carriage from (he cscapcment mechanism. and i1 stop pluccd in the path of the movable stop pins on said disk; substantially as described.

3. in a type'writing machinc, ihc comhlnatlon with a il'uvcllm: carriage, two drums containing opposing springs, one oi. which is a master spring for the carriage. a cable connecting said spring drums with said traveling carriage, an cscupemcnt mechanism comprising, a pivotaiiy mounted cscupcment shaft for controlling: the action of said master spring upon the czuriagc, a disk containing adjustable stops and connected to the sprlm, drum containing the wcuker spring, and n. tuhuiatlng key for engaging and moving the cscupemcnt shaft in rcnder the csi-apcmcnt mechanism inoperative and placing a projection in the path ol movement of the zuljuslnblc stop carried by said disk: substantially as described.

4. in a iypcwriliug machine, lhc comblnulion with a lruvcling carriage having a ruck, a pinion meshing with said ruck. a shaft on which said pinion is mounted, a swinging frame in which said shaft is. journolcd. :1 ratchct whccl on said shal'l. cscupculcnl nicchnnism coi'lpcratlng wiih said rulchcl wliccl. luhulnling kc lcvcrs dirccily -cnuzlgingz said shaft for swlngin snld frame and disenug said pinion from said ruck when-by said escapel slop lcrcrs oi diil'crcnl lcngths adapt-mi lo bc aclunlcd by i said lzihulaling kcys. and a vcrliculbv ilisp-is ii slop disk l uicnl mcclmnism'ls rcndcrcd inopccniivc. a p urality oi arrangement and combination of the several parts of coopcrullu: \vilh said slop lc\crs and iumplcd to bc l'u' the carriage; substantially as 'capement mechanism for said carriage-actuating means comprising a 1: iv.0tall v.munntcrl escapernent shaft, a horizontal shaft provided at its-front and with a stop disk which is always exposed to the view of the operator, means for causing the movement 01 the carriage to rotate said shaft in one direction, a spring for rotating said shaft in the opposite direction to return the stop disk to zero position, a plurality of stop levers of different lengths adapted to coiiperute with said disk, and tabulating levers for actuating said stop levers and also for em gaging and moving the escapement shaft to cause said escnpement mechanism to become inoperative; substaniizllly as described.

In testimony whereof I hereunto atlix my signature in Hie-presence of two witnesses, this twenty seventh day of November 1906.

WILLIAM W. HOPKINS.

WnLLs L, Carmen,

I Witnes sos GEORGE BAKEWELL. 

